/Engine/Source/Runtime/Engine/Public/AudioDeviceManager.h
Creates or requests an audio device instance internally and returns a handle to the audio device. This audio device is guaranteed to be alive as long as the returned handle is in scope.
[FAudioDeviceHandle](API\Runtime\Engine\FAudioDeviceHandle) RequestAudioDevice ( const [FAudioDeviceParams](API\Runtime\Engine\FAudioDeviceParams) & InParams )